Perforating apparatus



March E3, 1951 J. L. DE 500 PERFORATING APPARATUS 4 Sheets-Sheet 1 Filed March 18, 1948 INVENTOR JEROME L. DE B60 a /mm ATTORNEY March 13, 1951 J. L. DE 500 PERFORATING APPARATUS 4 Sheets-sheaf 5 Filed March 18, 1948 ammalian m YIII-IIIIIIM- .arch 13, 1951 J. L. DE BOO 2,545,198

PERFORATING APPARATUS Filed March \18, 1948 4 Sheets-Sheet 4 29' ii 264 288 284,: 286/ I44 269 243 243 1 FIG. 8

O 45 90 I55 I80 225 270 BIS 330,45 9!) 2! L NO.I

22 LJ No.2

23 w NO.3 SELECTOR ems 25 I No.5

' SELECTOR CLUTCH 44 L TRIP OFF cm ARMATURE LOCKING cm 60 l SELECTOR INTERPONENT SELECTION sRAsme cm 94 4 .------""l mmcu INTERFONENT SELECTION srusme cm I08 PUNCH CLUTCH TRIP OFF e m |22 mmca Eccem'mc 7 TAPE FEED PAWL INVENTOR 9 JEROME L. DE e09 ATTORNEY Patented Mar. 13, 1951 PERFORATING APPARATUS Jerome L. De Boo, Chicago, 111., assignor to Teletype Corporation, Chicago, 111., a corporation of Delaware Application March 18, 1948, Serial No. 15,592

14 Claims.

' forators in common use at the present time include a punch and die unit which requires very close tolerances in its manufacture, and consequently manufacturing costs are high. It is, therefore, another object of this invention to provide a reperforator wherein greater tolerances are allowable in the punch and die unit, thus reducing the cost of manufacture.

By this invention a high speed selector mechanism controls the selection of a plurality of punches in accordance with signals received by the selector mechanism. In the preferred embodiment of the invention the punches are floatingly mounted in slots in a stationary punch block. When the punches are selected in accordance with the signals received by the selector mechanism, the selected punches are caused to perforate a telegraph tape Thereafter the tape is advanced simultaneously as the punches are withdrawn from the tape; which causes the punches to be moved pivotally until they are withdrawn from the tape.

Therefore, another object of the invention is to combine a high speed tape perforating mechanism with a high speed selector mechanism.

Still another object of the invention is to provide a reperforator having pivoted floating punches whereby the punches may move with the advancing tape.

In a modified form of the invention the punch block is mounted pivotally in order that it can be moved as the punches are advanced towards the tape during the perforating operation; By this form of the invention, the tape is advanced during the perforating movement of the punches, "as well as while the punches are being withdrawn from the tape. Thus it is possible to increase the speed of the perforating operation since it is unnecessary that there be separate punching and tape feeding operations.

- Therefore, a further object of the invention is to" provide a reperforator wherein both the punches and the die are pivoted in order that they may move with the advancing tape.

A still further object ofthe invention is to provide a manually operated backspace mechanism in' a reperforator having a pivoted punch and die unit. Other objects and advantages not specifically recited above will be apparent and the invention will be better understood by reference to the fol-.- lowing detailed description when considered in conjunction with the accompanying drawings, wherein: V I Fig. 1 is a fragmentary isometric view showing the principal features of the preferred embodiment of the invention; Fig. 2 is a front elevational view of the reperfo rator with the front portion of the supporting frame removed for a better view of the features of the invention; I Fig. 3 is a detail fragmentary isometric view of theselector magnet and armature and the armature locking mechanism;

Fig. 4 is a detail isometric view of the punches; Fig. 5 is a transverse view of a section of tape perforated by punches of the type shown in Fig. 4; w

Fig. 6 is a front elevational view of a modified form of the invention showing permissively actuated punch interponents and a pivoted punch block;

Fig. '7 is a fragmentary isometric view of the tape feed and backspace mechanism used in the modified form of the invention shown in Fig. 6;

Fig. 8 is a side elevational view of the pivoted punch block and backspace mechanism shown in Fig. 7; v

Fig. 9 isa timing diagram of the various operations of the preferred embodiment of the invention;

Fig. 10 is a View of several differently shaped punches suitable for use with the invention; and

Figs. 11, 12, 13, and 14 show various types of punch and die wheels for rolling in the feed holes in a telegraph tape.

This invention incorporates a high speed selector mechanism of the type desclosed in the patent to W. J. Zenner, No. 2,339,313, issued Jan- .uary'18, 1944. In the invention herein described a series of selector levers move to a permutation of marking and spacing'positions depending upon the signals received by a selector magnet. When any of the selector levers move into marking position, cooperating selector interponents also move into marking position. Subsequent rotation of the selector cams causes both the selector levers and selectorinterponents to be moved to positions to set a corresponding group of punch interponents. Thereafter the selector levers and selector interponents return to normal position, thus providing for overlap. A punch bail engages and moves the punch interponents whereby those punch interponents which are in marking position engage and in turn actuate corresponding punches to perforate a telegraph tape. The punches are held in position fioatingly and pivotally by tension springs. As the punches are being withdrawn from the tape, the tape is advanced, and due to the freedom of the punches to pivot, they are carried along with the tape until withdrawn therefrom, and immediately upon such withdrawal they are snappedback to normal position by their tension springs.

Many features included in the disclosure of the present application are also disclosed and are claimed in the copending application of W. J. Zenner, Serial No. 15,653, filed on even date, now Patent No. 2,490,608, patented December 6, 1947.

Referring to the drawings the punching unit is supported-in .a pair-of side plates H of ,the main frame, shown only fragmentarily in Figs. 1 and 4. The selector cams indicated generally by numeral l2 and the various other operating cams are mounted to sleeveswhich are rotatable about a shaft l3 which is journalled frictionlessly in a pair of brackets |4 suitably secured to a base (not shown). The shaft |3 is rotated continuously in a clockwise direction by means of agear l6 which is driven continuously by a suitable source of power (not shown). I

Aselector cam sleeve H is mounted rotatably about the shaft l3 and is integral with a driven member (not shown) of ,a single revolution-selector clutch, the driving drum of which is represented by numeral l8. This clutchwhose-driving member I8 is secured to the continuously rotating shaft I3 is preferably of the type disclosed in the copending application of A. N. Nilson et al., Serial No. 707,176, filed in theUnited States Patent Ofiice on November 1,1946.

The selector cam sleeve 11 carries the usual series of five selector cams 2|, 22,123, 24 and 25. For the sake of clarity in the drawings only the fifth selector cam 25 is shown in Fig.1; however, the contour of all of these cams is clear from the timing diagram shown in Fig. 9.

A selector magnet 21 is mounted-suitably on the main frame of the reperforator and a selector armature28 cooperates with'the magnet 21. The armature 28 is biased by a spring 29 wherebyv the left end thereof, Figs. 2;'and 3,:is held in its lower or spacing-position when-the magnet 21 is de-energized. .Energization 'of the magnet 21 causes it to pull up the armature 28 to marking position.

A lever 3| is mounted 'pivotally on, a shaft 32 and is urged continuously in a clockwise direction by a spring '33. Thelever 3| .has a shoulder 34 thereon which adapted'to engage and be blocked by the armature '28 when it is in marking position, but when .the armature 28 is in spacing position'the lever 3| may be pivoted clockwise by its bias spring 33. A selector clutch trip ofi lever 36 is mounted pivotally on a shaft 31 suitably secured'to the main lever (not shown) on the driven member of the selector clutch. When the trip off lever 36 is pivoted clockwise the foot 4| releasesthe clutch lever allowing the driven member and selector rotation of the transmitting cam sleeve. start impulseof each telegraph signal being a cam sleeve IT to be rotated. A selector clutch trip off cam 42 on the selector cam sleeve |1 cooperates with a lug 43 on the trip off lever 36, the low portion 44 of the cam 42 presenting itself opposite thelug 43 upon the completion of each revolution of the selector cam sleeve l1. The cam 42 holds the lever 3| out of engagement with the armature 28 except during the stop and start impulses. The stop impulse of each telegraph signal being a marking impulse, it is apparent that the foot 4| will engage the clutch lever at the" end of each signal to stop The spacing impulse, it is also apparent that the transmitting cam sleeve will be released for rotationupon the receipt of each start impulse.

A ,pair of armature locking levers 46 and 41 are mounted pivotally on a shaft 48 and each is biased clockwise by an individual spring -53. Both of the locking levers have a lug 52 which cooperates with an individual locking cam 49. The locking lever 46 has a stepped shoulder 54 thereon for locking the armature 28 in spacing position and the locking lever 41 has astepped shoulder 55 for locking the armature 28in marking position. As is apparent from Fig. 9 the cam 49 has a contoured surface which allows the armature 28 to be held in whichever position it assumes in response to the signal impulses received by the magnet.

The five selector cams 2| through 25 cooperate with a series of five selector levers 6|, 62,63, 64, and 65. Each of the selector levers 6| through 65 is mountedpivotally on a shaft 61 suitably secured to the-frame and is yieldable thereon due to thevaction of individual bars45, slidable in apertures 50 in a plate 66 secured suitably to the frame, and individual leaf springs -1!] which continuously urge the selector levers towards the shaft 61 (Fig.2). Each of theselector levers is biased in a clockwise direction by an individual tension spring 68. Each of the selector levers has a lug 69 which follows the corresponding selector cam. When the armature 28 moves to marking position in response to one of the signal impulses the locking lever 41 momentarily locks the armature 28 in such marking position during which time the selector lever opposite the low part of the corresponding selector cam moves beneaththe armature 28. When the armature 28 is moved to spacing ;position in response toa signal impulse the locking lever 46 momentarily locks the armature 28 in spacing position. When the armature is thus moved and held in spacing position the selector lever opposite'the low part of the corresponding selector cam is blocked by the armature 28 and the lug 69 is prevented-from dropping into the low part of such cam.

A series of selector interponents 1|, only one of which is shown, have slots 12 therein and .are slidable longitudinally. -A comb bar 13 secured suitably to the main frame has slots in the transverse edges thereof which position transversely the selector interponents 1|. The comb bar 13 fits loosely within the slots 12 of each selector interponent 1| allowing each selector interponent 1| a slight degree of pivotal movement. A shaft 14 suitably secured to the main frame limits the clockwise pivotal movement of the selector interponents 1| and a series of springs 16 secured suitably to the main frame continuously urges the selector interponents 1| in a clockwise direction.

Each selector interponent 'II cooperates with a corresponding one of the selector levers 6| through 85 whereby a foot 11 on each selector interponent II remains on top of the corresponding selector lever whenever a spacing impulse controls such selector lever and drops behind the selector lever when a marking impulse controls it. Referring to the selector cam 25, se-

lector lever 65 and the selector interponent II in the fifth position, when the foot 'II drops behind the selector lever 65 in the manner described, subsequent rotation of the cam sleeve I'I brings an extra high portion I8 of the selector cam 25 against the lug 69 which pivots the selector lever 65 counterclockwise thereby moving the selector interponent H to the left to set a corresponding punch interponent 85 of a series of punch interponents SI, 82, 83, 84 and 85.

A latch bail 87 secured pivotally to the main frame at points 88 and biased in a clockwise direction by a spring 89 is adapted to latch a tooth 99 on any of the punch interponents BI through 85 moved by the selector interponents ll in the above-described manner. A bell crank lever 9I secured pivotally to the main frame by a bolt 92 has a cam follower 93 which follows a punch interponent release cam 94. The follower 99 is continuously urged against the cam 94 due to the action of a tension spring 96 suitably secured to the main frame. An upturned end portion 91 of the bell crank lever 9I cooperates with a lug 98 on the latch bail 81 to disengage the latch bail 81 from the punch interponents 8I through 85 when the high part of the cam 94 is opposite the follower 93. I

When all of the punch interponents 8I through 85 have been set due to the action of the extra high portions on the selector cams 2I through 25, a bail 56 is actuated to disengage the selector interponents II from the selector levers 8I through 65. The bail 56 consists of an L-shaped member pivoted to the main frame by a bolt and is continuously urged in a counterclockwise direction by a spring 58. The bail 56 has a cam follower 59 thereon adapted to ride a cam 69. As the cam 69 rotates the high portion thereof, upon engagement with the cam follower 59, pivots the bail 56 against the action of the spring 58 to erase any selection existing in the set of selector interponents II by moving them all to spacing position preparatory to the next selection to be set up therein.

Each of the punch interponents 8I through 85 is supported in a punch bail I8 I. A pair of comb bars I62 and I93,integral parts of the punch bail IDI, position transversely the punch interponents and allow them to slide longitudinally in the punch bail I8I. A set of tension springs I86.secured suitably to the punch bail I8l urge the punch interponents 8I through 85 to the right or spacing position. The punch bail IIlI is supported pivotall in the side plates II by a pair of pivot bolts I84 and is actuated pivotally about bolts I84 by a toggle mechanism indicated generally by reference numeral I81.

A punch clutch actuating cam I88 mounted on the selector cam sleeve I'l controls a single revolution punch clutch I09. The clutch I89 is preferably of the same type as the selector clutch, the driving drum of which is indicated by numeral I8. The clutch I09 has a driving drum III which is secured to the continuously rotating shaft I3 and cooperates with a driven member I I2 secured to a sleeve II3 freely rotatable on the shaft I3. A punch clutch trip 01f lever II4, secured to a 8 shaft I I6 mounted pivotally in the side plates I I cooperates with a clutch lever II'I to trip off the punch clutch I89. A cam follower lever II8 secured to the shaft I I6 is continuously urged in a counterclockwise direction by a spring I I9 whereby a follower I2! is held in engagement with the punch clutch actuating cam I88. When the high portion of the cam I08 presents itself to the follower I2I the shaft II6 is-rotated clockwise sufiiciently to pivot the trip off lever H4 from engagement'with the clutch lever I I1 thereby releasing the clutch I89 for rotation. It is, therefore, clear that the punch clutch I89 is only tripped off when the selector clutch has been tripped off previously.

A punch eccentric I22 is secured to the sleeve 3 and as the punch eccentric I22 rotates it substantially reciprocates a lever I23. The lever I23 is secured pivotall by a bolt I24 to one arm of a U-shaped lever I26 and is adapted to oscillate pivotally the U-shaped lever I26 about a bolt I21 secured rigidly to the reperforator frame. The other arm of the U-shaped lever I26 is connected pivotally to a link I28 by a bolt I29 whereby reciprocation of the lever I23 is transferred to the link I28. The link I28 is secured to a shaft I3I which actuates the toggle mechanism I87.

A beam I62 is mounted rotatably between the side plates II on a shaft I33. A U-shaped lever I84 secured to the beam I32 has a pair of arms I36 and I81 which are secured pivotally to the shaft I3l. Adjacent the arms I36 and I3! are a pair of levers I38 and I39 also pivoted to the shaft I3I. The levers I38 and I39 are secured pivotally at the opposite ends thereof to the punch bail I8I by a pair of bolts I4I. As the link I28 moves-to the left straightening the toggle mechanism consisting of the arms I36 and I3? and the levers I38 and I39, the punch bail IOI is raised and conversely as the link I28 is moved to the right the toggle mechanism breaks and the punch bail Iill is lowered.

A punch block I42 is supported rigidly between the side plates It and has a series of open faced slots I43 within which a series of punches I44 are reciprocable. A comb bar I46 supported between the side plates II serves to guide the punches I44 and acts as a stop for the punches engaging a shoulder I41 on each punch I44 as the punch is lowered. A die plate I48 is bolted to the punch block I42 and has a series of open faced slots (not shown) within. which the punches I44 extend during the upward movement thereof. Each punch I44 is held within its slot I 48 by a-spring I49 which is secured to a bar l5I suitably mounted between the side plates II. The punches I44 are therefore floatingly mounted in the punch block I42.

A shaft I54 mounted between the side plates II supports a rotatable sleeve I55. A tape feed hole punch wheel I56 is secured to the sleeve I55, and a series of feed hole punches I5? formed on the periphery of the wheel I56 mesh with die holes I58 spaced uniformly around the periphery of a die wheel I59 freely rotatable on a shaft I99. Rotation is imparted to the punch wheel I56 and die wheel I59 by means of a ratchet wheel i6I secured to the sleeve I55. A tape guide wheel I62 having a shoulder 563 around the periphery thereof is also mounted on the sleeve I55. A tape feed guide I64 guides a tape I66 into position where it is engaged by the feed hole punch wheel I55 and the tape guide wheel I62 and as the feed hole punch wheel I56 and the die wheel I59 mesh with the tape I66 therebetween a series of uniformly spaced feed .holes' are-punched in the:

tape i662. The correct transverse position of the feed holes inthe tape its. is maintained by the tape guide wheel ifiz asthe edge. of thetape Hi:

abuts-the shoulder 133. The. tape isthen advanced through a slot (notshown) between the.

punch block Hi2 and the die. plate M8.

The ratchet wheel. ifi i is rotated by means of a pawl I61. The pawl Iii-i is: secured pivotally by abolt 8 to an extended portion I59 of the arm I36 and is biased ina counterclockwise direction by a spring iii suitably secured to the main frame. A detent lever H2 is secured pivotally to the side plate i! by a bolt [73- and is biased in a counterclockwise direction by a spring lid. The detent lever ll'2 carriesi a detent roller iifi. which engages the ratchet wheellti between the teeth on the periphery thereof to prevent backward rotation of the ratchet wheel 1%.! while the feed pawl I61 is beingreturned preparatory to making another stroke. [is the toggle mechanism it? is straightened to actuate the punchbail iti, the extended portion I82 on the. arm we is. pivoted counterclockwise which pulls down thefeed pawl IE1 causing it to slip over one of the teeth on the ratchet wheel i8! and thereafter. as. the toggle lfl l break's, the. feed pawl iii-fl is moved up to step the ratchet wheel ifil, after which it is held in stepped position by the detent roller I16.

When the punch bail iii! is raised extended portions l'ilon each of the punch interponents 8! through 85 which have been previously moved to marking position engage shoulders i'iB on corresponding punchesiM-to raise these punches forcing the cutting edges thereof. through the tape [63. Thereafter asthe punch bail idi is lowered'the tape tee is advanced and the punches Hi4 which were raised to tape piercing position are carried-along and-pivoted counterclockwise to the dotted position H9 shown in Fig. 2. As the punch bail it'll is lowered the extended portion ill on each of the selected punch interponents 8i through 85 engages a foot IS! on each punch its to withdraw the punches hid. The perforations thus left in the tape [SS after the punching operations are of the well known chad less type wherein the portions of the tape punched out remain hinged to the tape giving the appearance of trap doors. Fig. 5 sh us an example of the tape perforated by the above described reperforator.

A brief description of the operation of the invention follows. The selector magnet 2"! is en gized and de-energized in accordance with signals received thereby from a distant transmitter (not shown) The armature 28 is accordingly pulled up when the magnet 2i is energized and allowed to fall due to the urging of the spring 29 when de-energizecl. Normally when no signals are being received the magnet 2'? is energized as the transmitter sending the signals is in its stop position, a marking position. The armature 28, being pulled up, blocks the shoulder 34 to prevent pivotal movement of the selector clutch trip off lever 38' thus preventing rotation of the selector cam sleeve ll. When a start impulse is received, being a spacing impulse, the magnet 21 is ole-energized which allows the armature 28 to move to spacing position. At this time, the low portion of the cam Ml being oi posite the lug G3 and the shoulder 33 being unblocked, the selector clutch trip off'lever ttz'pivots clockwise to trip off the selector clutch.

After'the-start signal is received by the selector 8 magnet-2i, five: permuted markingor spacing impulses arereceived in timed relation to the presentation of the low portions of the selector cams 2i through 25 to the cooperating lug followers 59 on the selector levers 6| through 65..

Each marking or spacing impulse is received shortly prior to the presentation of the low part of the selector cams to the lug followers 69 and is received justprior to the presentation of one. This. allows the armature 28 to respond to the impulseof the low portions of the locking cam 49.

of the locking cam 49 is urged counterclockwise- (F-ig. 2) after each signal impulse is received by the proper selector lever B! through 5.5 in order to allow the armature 28 to respond to the sub-- sequent impulse received by the magnet 21.

The selector interponents "H cooperating with the selector levers which have been moved to marking position drop behind the corresponding selector levers, and the selector interponents 'Il cooperating with selector levers which are in spacing position remain on top of the corresponuingseiector levers. When the selection of the selector levers has been made, extra high portions of the selector cams 2! through 25 move the selector levers counterclockwise.beyond the normal positions thereof. When the selector levers are moved in this manner, the selector interponents H which have dropped behind the selector levers are moved further to the left and those selector interponents it which are positioned on top of their corresponding selector.

levers remain in the rightward position thereof (Fig. 2) the selector levers merely sliding beneath the feet 77.

A the. selector'interponents 'H move to the left in this manner they engage and push corre sponding punch interponents 8i through to the left whereby the teeth 99- on the punch interponents so moved slip beneath and are thereafter latched by the latch bail 87.. The punch interponents 3i through 85 having been latched in marking position, the. selector interponents H return to the right due to the action of the springs 'idwhen the. bail 58 is actuated by the cam t0; Shortly thereafter the selector inter.- ponent release bail 56 ispivoted clockwise by the. cam 69. to lift all of the selector interponents ii previously moved to marking position, leaving themon top of the selector levers, thus erasing the selection existing therein. By this time the selector cam sleeve IT has commenced a second revolution and the signal received during the first revolution thereof is stored in the punch interponents 81' through 85.

The extended portions I'll on the punch in-. terponents 31 through 85 which have been moved to the left (Fig. 2) or marking position are in positions for actuating their respective corresponding punches l i i when the punch interponents are raised. The toggle mechanism till for raising the punch bail l0! commences straightening at substantially the same time that the punch interponent are selectively positioned by the selector interponents i I and is completely straightened at a time between the selection of the first and second impulses of the next suc- The The locking lever 46 or 41 whose.

ceeding signal. During the period when the toggle I01 is straightening, the feed pawl I61 is being backed up and the feed hole punch wheel I56 is rendered stationary by the detent I12 cooperating with the ratchet wheel I6I.

The tape I66 being stationary during the upward movement of the punch bail IOI, the selected punches I44 are engaged on their shoulders I18 by the extended portions I11 of the punch interponents and the punches H44. are

therefore raised vertically, the springs I49 holding the punches I44 within the slots I43 in the punch block I42. The punches I44 pierce the tape I66 leaving the chad attached thereto. Upon straightening of the toggleI 01, the punches I44 attain their uppermost position. Thereafter,

as breaking of the toggle I01 continues, the pawl ,die holes I58 in the die wheel to punch another feed hole in the tape 166. The feed holes thus punched, like the code holes punched by the punches I44, have the chad attached to the tape. Besides punching the feed holes in the tape I66,

the feed hole punch wheel I56 also advances the tape I66. The tape I66 is advanced while the punches I44 are being withdrawn therefrom and the punches I44 are therefore carried along with the tape I66 to the dotted position thereof represented by numeral I19. As the bail IN is lowered due to the breaking of the toggle I01, the extended portions I11 of the punch interponents engage the feet ISI of the punches I44 to lower the punches from the tape I 66. The punches I44, upon withdrawal from the tape I66 are immediately snapped back into position in the guide slots I43.

Very shortly after the tape feeding is completed and the punches I44 are completelywithdrawn the high portion on the punch interponent release cam 94 presents itself to the cam follower 93 pivoting the bell crank 9| clockwise to raise the latch bail 81 from engagement with the teeth 99 on the punch interponents. The springs I06 on each of the punch interponents then are free to move their punch interponents to the ri ht or unselected position. Thereafter the entire punching mechanism is ready for the next selection.

A modification of the invention is shown in Fig. 6. In the following description of this embodiment those parts which have reference numerals the same as parts already described are identical therewith. Only those parts are shown and described which are considered necessary to" differentiate from the first embodiment.

The shaft I3 has the selector cam sleeve I1 therearound which is under control of 'a selector clutch (not shown in Fig. 6). The selector cams are represented by the fifth selector cam 25 and the selector levers are represented by the fifth selector lever '65. The selector levers are all mounted pivotally on the shaft 61 and are spring biased clockwise about the shaft 61 by individual springs 68. When a marking impulse is received the armature 28 is pulled up (as illustrated) by the magnet and the selector lever 65 is allowed to be biased in a clockwise direction when the lug 69 engages the low part of the cam 25.

A set of five selector interponents, represented by..the fifth selector interponent 20I, are pivotal i one shaft 202, and all are spring biased clockwise about the shaft 202 by springs 203 secured 10 to the vertical arms 204. The shaft 202 is positioned within a cam slot 206 in each selector interponent 20I. Each of the cam slots 206 has an upper horizontal portion 201 which allows the selector interponent 20I to slide horizontally lector levers 65. When any. of the selector levers 65 become selected they move clockwise sufficiently to allow the rightward extremities of the selector interponents 20I to slip therebehind and m0unted pivotally at 22I.

come to rest momentarily on the bail 56. There- .after, as the selector cams 25 continue rotating,

the extra high portions 18 thereof engage the lugs 69 to pivot the selector levers counterclockwise. The upper portion of the selector levers 65 which have been moved in response to a spacing impulse slide beneath the rightward extremities of the, unselected selector interponents 20I and the selector levers 65 which have been moved in response to a marking impulse move the corresponding selected selector interponents 20I to the left, during which movement the left ends of the selector interponents are raised due to the caming action ofthe shaft 202 within the slots 206. 7 Raising the selector interponents 20I in this manner causes a tooth 208 on each selected selector interponent 20I tobecome disengaged from a cooperating tooth 209 on each corresponding punch interponent 2| I.

There 'are five punch interponents 2II which are mounted slidably within the punch bail IOI by means of a pair of comb bars 2I2 and 2I3. Each of the punch interponents-2H has a vertical arm 2I4 to which is secured a s ring 2I5 for biasing the punch interponents 2I I to the left. Therefore when the teeth 208 on the selector interponents 20I become disengaged from the corresponding teeth 209 the punch interponents 2 are moved to the left by the springs 2I5. When the punch interponents 2 are moved in this manner the extended portions I11 thereon are positioned suitably for actuating the corresponding punches I44 as the toggle I01 straightens.

A cam 2I1 secured to the punch clutch sleeve II3 cooperates with a follower 2I8 of a lever 2I9 A link 222 is secured pivotally at one end thereof to the lever 2I9 by a pivot bolt 223 and the other end of said link 222 is secured pivotally to a lever 224 by a pivot bolt 226. The lever 224 is mounted pivotally by a bolt 221 and carries a bail 220. The two levers 'punch interponents 2| I and moves the punch interponents to the right where they are latched by the teeth 208 and 209. The teeth 208 and 209 each have cam surfaces thereon and the punch interponent 2 can move vertically sufficiently in the slots in the comb bar 2I3 so that the toot 209 can slip past the tooth 208.

Shortly after the selection set up in the selector interponents 20I is transferred to the punch interponents 2I I the bail 56 is raised in the manner hereinbefore described to strip. the selector interponents 20I from behind the selector levers 65 and thereby erase the selection existing in the selector interponents 20I. A subsequent revolution of the selector cam assembly produces "24] secured thereto.

states fa selection in the selector 'interponents 20 I.

.Just prior to a completebreak of the toggle I01 to the pos tion thereof shown in Fig. 6 "the high por tionoi the cam '2 I"! engages the follower 2 I8 causing the punch interponents ;2iII to be moved to the right and latched in unselected position.

'Jlhereafter the follower 2118 rides off the high portion .of the .camZIII and the spring 229 cau es theIbailZZB to'be withdrawn from the teeth 231.

pivoted punches .IMare movable within a pivoted ..punchb10ck2i4ItEig. 8). IA punch block frame 242 is secured pivotally to the side plates II at .pivot points 243 and has the pivotedipunch block The horizontal portion of the punch block .frame 242 serves as a .die block 240. Horizontal extensions 244 .on the punch block frame 242 have slots 245 '(Fig. 6) in the extremitiesithereof within which a pair of studs 241 protrude. When the punch bail IFII is raised,

Lextens'ions 244 of the punch block 'frame 242 pivoting the punch blockframe242 counterclock- Wise.

Apair of 'tapefeed pawls 1248 an 249 aresecured pivotally to the punch bail IUI by 'a bolt 251 and are biased towards a feed ratchet wheel 252love. spring 25-3. Thefeed pawl'24 9'is ad anted gto engage a tooth in the ratchet wheel 252 to rotatably advance the wheel 252 clockwise '(Fig. '7) during the down;stroke of the punch bail IIII andithe feed pawl 24.8 engages --a tooth on the ratchet wheel 252 to advance the wheel 252 dur- "ing the up stroke of the :punch bail IIi-I. The feed ratchet wheel '252gis secured to the sleeve 155 to which ,is also secured the tape feed hole punch wheel I55. The feed hole punch wheel +56 cooperates with the feed hole die wheel I59 to punch feed holes in a tape advancing therer ieed hole punch wheel I56.

between in the manner hereinbefore described.

Assuming that a selection has been set up in the punch inter-ponents 2-I I the operation of the pivoted punch block is as follows. As the toggle IDI straightens, the punches I44 correresponding to "those punch 'interponents 2! I which "have moved to the left (Fig. 6 are raised to perforate the tape I66 (not shown in Fig. 6) as the tape moves through a tape slot 254. At the same time the punch block "24I is pivoted forward (Fig. 7) carrying with it the punches I44.

Also at the same time the feed pawl 248 engages and advances the ratchetwheel clockwise :to ad- 'vance the tape an amount equal to the distance breaks, the pawl 249 advances .the tape further and the punch block moves back to the position shown in Fig. 7. The punches 144, being within the perforations in the tape at the start of the, return stroke of the punch 'bail ILIII, are carried along with the tape and pivot relative :to the punch block 2 until they are withdrawn from embodiment of the invention, are of the chadless :type.

Following-is a description of a backspace-mechnanism for the, :reperforator having pivoted the punch block 24I is pivoted. .On the return stroke of the :punch bail sIII'I, .as the toggle I01 12. punches and ;a pivoted punch block. .A ratchet wheel "26I is secured, to the sleeve I55 and-nor- .mally rotates therewith. ,A manually operable plate 262 vhas a bent over top portion 263 by means of "which the plate 262 may be depressed. A pin 234 secured to the side plate II protrudes through a longitudinal slot 256 to guide the plate 262 when it is depressed. A wide slot 251 in the plate 262 surrounds the sleeve I55 and prevents the plate'262 from moving laterally. A pin 258 secured to the plate 262 has a spring 269 attached thereto which spring 289 is also attached to the pin' 264 and continuously urges the plate 262 upwarr's. A pawl 271 is secured pivotally to the plate 262 by a bolt 272 and has a depending arm 27-3 having a cam surface 214 thereon which cam surface 214 cooperates with an adjustable eccentric 215 secured to the side frame II. The pawl .2'II also has a horizontal arm 21? which carries a spring 2'58 secured at its other end to a horizontal arm 219 on the plate 262. The spring 218 tends to urge the pawl 2' in a clockwise direction towards the ratchet wheel 'ZSI but the pawl 2"II is held disengaged from the ratchet 26! normally due to engagement of the cam surface 214 on the depending arm 213 with the eccentric 216. Therefore, Curing nor- :mal operation the ratchet wheel 26I is free to rotate as the sleeve I55 rotates.

The plate 252 carries a pin 2BI substantially opposite the pin 228 which is adapted to coopcerate with the lower portions .of the pawls 248 and 249 when the plate 252 is depressed to cam said pawls 248 and 2149 from engagement with the ratchet wheel 252. When the plate 262 is depressed the pawls 248 :and 24.9 are icammed from engagement with the ratchet wheel 252 after which the .cam surface 214 overrides the eccentric 215 allowing the spring 2'58 to urge the pawl 2;?! against the ratchet wheel 26L Upon further depression of the plate 262 the pawl 2H engages a tooth on the ratchet wheel .261 and moves the wheel 26! counterclockwise, thus backing up the tape (not shown) over the A chad fiattener 282 has five wedge-shaped lugs 2B3 positioned on the under side thereof which are aligned with the five punches I44 positionedin the punch block 2M. The chad flattener 282 is formed with a pin 2.34 integral therewith which pin 284 is slidable longitudinally in a hole 28Ii'through the punch block 2 H. A pin 23-! secured to the punch block frame 222 also helps to position "the chad fiattener 282 by extending through a hole (not shown) in the chad flattener 282. A horizontal arm 28% has a tension spring 289 secured thereto which spring 289 is secured :at its other end to the chad .flattener 282. A rod 291 ;is positioned within the spring .289 tomaintain the chad fiattener 282 out of engagement with the tape at all times except when '-a backspacing operation is in progress.

In the operation of the chad flattener during a backspace operation the chad flattener 282 is lowered during the first part of the depression of the plate 252 .due to the urging of the spring .289. When the chad flattener 282 is lowered in this way one :of the wedge-shaped lugs 283 is ,lowered .aboveheach row of perforations in the tape into the slots 292 in the die block 245). Further depression of the plate 262 merely stretches the spring 289 and the lugs 283 are held in their .lcwered position until the plate 262 is released and pulled up by the spring 259 until the rod 289 lifts the c ad fiattener 28.2.

, of which may be used with the invention. The 'punch indicated by reference numeral Sill produces a chadless tape with apertures having round backs. The punch 392 produces a square .aperture in the tape like that shown in Fig. 5.

The punch 303 produces a hole substantially round except for a narrow lid. The punch 36 i merely pierces the tape.

Figs. 11, 12, 13, and 14 show various types of tape feed hole punch wheels and die wheels. In Fig. 11 a feed wheel 366 has round feed hole punches at? which mesh with elliptically shaped die holes 3138 in a die wheel 359.

In Fig. 12 a feed wheel 3H has square feed hole punches 2H2 adapted to enter a peripheral groove M3 in a die wheel tilt. Fig. 13 shows a feed wheel 3H5 having square feed hole punches 3!! which mesh with substantially square holes BIS in a die wheel M9. Fig. 14 shows a feed wheel 32l having needle pointed punches 322 which mesh with substantially round holes 323 in a die wheel 324.

Various changes and modifications may be made in the invention without departing from the scope thereof.

What is claimed is: 1. In a telegraph reperforator forperforating a tape in accordance with code signals received thereby, a selector mechanism for receiving the code signals, a plurality of pivotally mounted punches for perforating the tape, each of said punches being mounted pivotally with respect to each other, means for transferring said signal to said pluralit of punches from said selector mechanism, means for actuating said plurality 'of punches whereb said signal transferred to said punches is perforated in said tape and said punches are thereafter withdrawn from said tape, and means for advancing said tape while said punches are being withdrawn therefrom whereby said punches are moved pivotally by the advancing tape until completely withdrawn therefrom.

2. In a telegraph reperforator for perforating a tape in accordance with code signals transmitted to said reperforator, a selector mecha' nism for, receiving the code signals, aplurality of pivotally mounted punches for perforating the tape and normally in unselected position, said punches being pivotally mounted independently of each other, means for returning said punches tounselected position, means for transferring said signals to said p urality of punches, means for actuating said punches whereby said punches are moved into saidtape to perforate therein said signals transferred to said punches and thereafter said punches are withdrawn from said tape, and means for advancing said tape while said punches are being withdrawn'completely therefrom, wherebyv said punches are moved pivotally by the advancing tape until said punches are withdrawn therefrom and thereafter said punches are returned to unselected position b said returning means.

3. In a telegraph reperforator for perforating a tape in accordance with code signals transmitted thereto, a selector mechanism for receiving the code signals, a plurality of pivotally mounted punches for perforating the tape, each of said punches being pivotally mounted with respect to each other, means for actuating said punches to perforate said tape, means for trans ferring said signals from said selector mechanism to said punches to cause said punches to be selectively actuated by said actuating means in accordance with the'signals transferred to said punches, said selectively actuated punches being caused to enter and perforate said tape and thereafter to be withdrawn from said tape by said actuating means, and means for advancing said tape while said punches are being withdrawn therefrom, whereby said punches are moved pivotally by the advancing tape until said punches are withdrawn completely therefrom.

4. In a telegraph reperforator for perforating a tape in accordance with code signals trans: mitted to the reperforator, a selector mechanism for receiving the code signals, a plurality of selector levers, a plurality of selector interponents cooperating with said plurality of selector levers to store said signals received by said selector mechanism, a plurality of punch interponents normally positioned in a first position and adapted to be positioned permutatably between said first position and a second position in accordance with said signals, means for tending to prevent movement of the punch interponents from their first position, means for moving said plurality of punch interponents to said second position, cam means associated with each of said selector interponents, means for actuating said selector levers and selector interponents whereby said cam means cause said selector interponents to permit said punch interponent moving means to move said ones of said plurality of punch interponents to said second position to form permutations of positions of said plurality of punch interponents in accordance with the signals stored in said selector levers and selector interponents, a plurality of punches cooperating with said punch interponents for perforating the tape in accordance with said signals stored by said selector levers and selector interponents, and means for actuating said punches whereby ones of said punches corresponding to said ones of said punch interponents moved to said second position are caused to perforate said tape.

5. In a telegraph tape reperforator, a selector mechanism for receiving code signals, a plurality of punch interponents, a plurality of punches cooperating with said punch interponents to perforate a telegraph tape in accordance with said code signals received by said selector mechanism, means for holding the interponents in a predetermined position, means for releasing ones of saidpunch interponents from the predetermined position in accordance with said code signals received by said selector mechanism, means for moving said released punch interponents into punch actuating position, and

means for actuating said plurality of punch interponents whereby said punches cooperating with'said ones of said punch interponents in mechanism for receiving code signals, a plurality of punch interponents normally positioned a inonpunch'factuatingpositiommeans:fornormally -.retaining the punch interponents in the non- Imal'position to be thereafter released by said punchinterponent releasing means in accordance with subsequent signals received by said selector mechanism.

'7. In a telegraph tape reperforator, a selector mechanismfor receiving code signals a plurality of punch interponents movable individually to punch'actuating position, a plurality of punches for perforating a tape cooperating with said punch interponents, means for converting said signals received by saidselector mechanism into permutations of positions of said punch interponents, a pivotal punch block for carrying said plurality of punches, each of said punches being carried within the punch block'for pivotal move- 'ment independently of each other, means forac- 'tuating ones of said punches corresponding with ones of saidpunch interponents in punch actuating position to perforatesaid telegraph tape, and means for advancing said tape, said tape advancing means functioning to advance 'said 'tape during the interval when said punch 'actuating means is actuating said punches and pivoting said punch block.

8. In a telegraph tape reperforator, a selector mechanism for receiving code signals, a plurality of individually selectable punches for perforating a tape, means for selecting ones of said plurality of individually selectable punches in accordance with the signals received by said selector mechanism, a pivotally mounted punch block for carrying said plurality of individually selectable punches, each of said punches being carried for independent pivotal movement within the punch block, means for advancing said tape, and means for actuating said punches and said punch block, said tape advancing means operating to advance said tape and said actuating means functioning simultaneously therewith to pivot said punch block with the advancing tape and to actuate selected ones of said plurality'of "selectable punches to perforate said tape in accordance with the signals received by said selector mechanism.

9/ In a telegraph reperforator, a selector mechanism for receiving code signals, a plurality of individually selectable punches for perforating a tape, means for selecting ones of said plurality of individually selectable punches in '-accordance with the signals received by said selector mechanism, a pivotally mounted punch block normally positioned in a non-punching position for carrying said plurality of individually selectable punches, said punches mounted pivotally in said punch block, means for advancing the tape, and means for actuating said punches and said punch block, said tape advancing means operating to advance the tape during a perforat- "ing operation and said actuating'means func- 't-ionin'g to simultaneously pivot said punch block with the'advancing tape and cause selected ones of said plurality of selectable punches to enter and perforate said tape in accordance with-the :signals received by said selector mechanism, said actuating means thereafter functioning to return said punch block to normal positionand to withdraw said punches from the advancing tape, whereby said punches are moved pivotally by the advancing tape until said punches are withdrawn completely therefrom.

'10. In a telegraph reperforator for perforating code signals in'a tape, a selector mechanism for receiving code signals, a plurality of punch interponents normally in an unoperated position, -means for urging said punch'interponents toward the inoperated position, selector members normally retaining said punch interponents in their unoperated positions, means associatedwith said selector mechanism for permutably operating said selector members for'releasing permutably said punch interponents, means for moving said released punch interponents to an operated position, a plurality of punches, and means for causing said punches to 'permutably perforate the tape in accordance with the setting of said punch interponents, whereby said punch interponents in an operated position will cause corresponding punches to perforate the tape and those in an unoperated position will not cause corresponding punches to perforate the tape.

11. In a telegraph tape 'reperforator, a selector mechanism for receiving code signals, a plurality of punches for producing lidded apertures in a tape, means for transferring said signals received by said selector mechanism to said plurality of punches to cause said punches to perforate said tape in accordance with said signals, means for advancing said tape during each perforating operation, a manually operable mechanism for disengaging said tape advancing means and stepping said tape backwards, and a plurality of wedges operable with said manually operable mechanism for guiding the lids-of said apertures to facilitate the backward movement of said tape.

12. In a telegraph tape reperforator, a selector mechanism for receiving code signals, a plurality of punches for producing lidded apertures in a tape, means for transferring said signals received by said selector mechanism to said 'plurality of punches .to cause said punches to perforate said tape in accordance with said signals, a pawl and ratchet mechanism for advancing said tape during each perforating operation, a manually operable mechanism for disengaging said pawl and ratchet tape advancing mechanism and backspacing said tape, and a plurality of wedges operable with said .manually operable mechanism for guiding the lids of said apertures to facilitate the backward movement of said tape.

13. In a telegraph tape reperforatcr, a selector mechanism for receiving code signals, a plurality of punches for producing lidded apertures in a tape, means for transferring said signalsireceived by said selector mechanism to-said plurality of punches to cause said punches toperforate said tape inaccordance'with said'signals, a punch block for carrying said plurality of punches, means for advancing said tape during each perforating operation, a manually operable mechanism for disengaging said tape advancing means and back spacing said tape, and a flattener carried by said punch blockand operable with said m'anually operablecmechanism for guiding the lids of said apertures to facilitate the backspacpunches to cause said punches to perforate the 10 tape in accordance with said signals, a rotary feed wheel having punches about the periphery thereof, a rotary die wheel having die holes in the periphery thereof for cooperation with said punches on said feed wheel for perforating feed holes in the tape and advancing said tape, and means for simultaneously actuating said rotary feed and die wheels and said plurality of punches to advance and perforate said tape, whereby said pivotally mounted punches are moved pivotally with said advancing tape.

JEROME L. DE BOO.

REFERENCES CITED The following references are of record in the file of this patent! UNITED STATES PATENTS Number Name Date 1,884,743 Kleinschmidt Oct. 25, 1932 2,273,910 Swan Feb. 24, 1942 15 2,316,795 Lake Apr. 20, 1943 2,352,060 Wusteney June 20, 1944 2,391,984 Lake Jan. 1, 1946 

